Sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank

Abstract

The invention relates to the field of sewage treatment, in particular to a sewage treatment dosing system suitable for a sewage flocculation separation sedimentation tank, and aims to solve the problem that the feeding amount of a flocculant cannot be automatically adjusted according to the condition of sewage needing to be treated when the flocculant is fed. According to the invention, sewage needing to be treated and external environment interference factors of sewage treatment are collected, the flocculant addition amount is generated through a dynamic model simulation mode, then a sewage flocculation result is detected, whether the flocculant addition amount is enough is judged, insufficient addition of the flocculant is avoided, and the sewage treatment efficiency is improved. The method automatically corrects and adjusts the simulation model of the flocculant addition amount, monitors the sewage flocculation process, analyzes whether the addition of the sewage flocculant is excessive or not, avoids excessive addition of the flocculant, realizes automatic addition of a proper amount of the flocculant according to the sewage treatment requirements, and improves the sewage treatment efficiency. And the purpose of automatically optimizing the simulation accuracy of the putting amount of the flocculating agent is achieved, and the intelligent degree in the sewage treatment dosing process is improved.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment dosing system suitable for a sewage flocculation separation sedimentation tank. Background Art

[0002] Sewage treatment is the process of purifying sewage to make it meet the water quality requirements for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. There are many ways to treat sewage, which can generally be summarized as physical, chemical, and biological methods. Most of the current sewage treatment methods are a combination of physics and chemistry, that is, first add flocculants to sewage to react with pollutants in the sewage to produce particles or flocs, and then precipitate through sedimentation tanks or other containers to obtain relatively clean water;

[0003] At present, the existing patent document CN206266295U discloses a technical solution, in which the automatic delivery of flocculants is realized through a drug storage chamber and an extruder, and the delivery effect is faster than manual delivery, the delivery amount is more accurate, and the disadvantage of human error in the flocculant delivery process is improved. However, in this solution, the delivery of flocculants is still quantitatively delivered according to a preset amount, and when different amounts of flocculants need to be delivered, manual adjustment is still required, and automatic analysis according to the sewage treatment situation cannot be achieved, thereby failing to achieve the effect of intelligent regulation of the flocculant delivery amount;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] In the present invention, sewage to be treated and external environmental interference factors of sewage treatment are collected, and the amount of flocculant added is generated by dynamic model simulation, so that the flocculant is automatically added in an appropriate amount according to the needs of sewage treatment, thereby improving the intelligence level of the sewage treatment dosing process, solving the problem that the amount of flocculant added cannot be automatically adjusted according to the sewage to be treated when the flocculant is added, and proposing a sewage treatment dosing system suitable for a sewage flocculation separation sedimentation tank.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A sewage treatment dosing system suitable for a sewage flocculation separation sedimentation tank comprises an action analysis unit, wherein the action analysis unit is used to collect the action environment during sewage treatment, simulate the collected action environment, and obtain an initial flocculation ratio;

[0008] A sewage collection unit, the sewage collection unit is used to obtain the sewage pollution mean and sewage volume, and analyze the sewage pollution mean and sewage volume to obtain the sewage treatment volume;

[0009] A dosing control unit, wherein the dosing control unit obtains the sewage treatment volume through the sewage collection unit, obtains the initial flocculation ratio through the action analysis unit, and simulates the sewage treatment volume and the initial flocculation ratio to obtain the dosing amount;

[0010] A sewage separation unit, wherein the sewage separation unit is used to collect statistics on the sewage after flocculation to obtain a mean value of drainage pollution, and to analyze the flocculation effect according to the mean value of drainage pollution to obtain a dosing correction factor, and to correct the dosing amount of the dosing control unit by the dosing correction factor;

[0011] The data statistics unit performs online monitoring of the sewage flocculation process, generates a dosing correction factor based on a comprehensive analysis of the online monitoring process and historical data, and corrects the dosing amount of the dosing control unit through the dosing correction factor.

[0012] As a preferred embodiment of the present invention, when the action analysis unit collects the action environment, first the temperature of the sewage in the sewage flocculation separation sedimentation tank is collected and recorded as the initial temperature of the sewage, and the pH of the sewage in the sewage flocculation separation sedimentation tank is collected and recorded as the initial pH, and then the sewage temperature and the pH of the sewage are collected at a certain time interval and recorded as the process temperature and the process pH;

[0013] The action analysis unit introduces the initial temperature and the initial pH into a preset flocculant action model, generates an initial flocculation ratio through the preset flocculant model, and sends the initial flocculation ratio to the dosing control unit.

[0014] As a preferred embodiment of the present invention, the sewage collection unit obtains the sewage volume through a flow meter, and collects sewage pollution data through a sewage online automatic analyzer. The collected sewage pollution data includes nitrogen and phosphorus content, total organic matter content, heavy metal ion content and suspended particle content in the sewage. The sewage collection unit assigns different weight thresholds to different data in the sewage pollution data, and calculates the sewage pollution mean through weighted average.

[0015] The sewage collection unit performs comprehensive calculation based on the sewage volume and the sewage pollution mean value through a formula to obtain the sewage treatment volume, and the sewage collection unit sends the sewage treatment volume to the dosing control unit.

[0016] As a preferred embodiment of the present invention, the dosing control unit substitutes the sewage treatment volume and the initial flocculation ratio into a preset dosing ratio model for calculation to obtain the dosing amount, and releases the flocculant according to the dosing amount.

[0017] As a preferred embodiment of the present invention, the sewage separation unit collects sewage pollution data in the following manner: collecting the data during the sewage discharge process;

[0018] The sewage separation unit performs weighted average calculation on the pollution data in the drainage process again to obtain the drainage pollution mean value. The sewage separation unit compares the drainage pollution mean value with the preset pollution threshold value. If the drainage pollution mean value is less than the preset pollution threshold value, a flocculation qualified signal is generated. If the drainage pollution mean value is greater than or equal to the preset pollution threshold value, a flocculation failure signal is generated.

[0019] As a preferred embodiment of the present invention, after generating a flocculation failure signal, the sewage separation unit sends the flocculation failure signal and the drainage pollution mean to the dosing control unit. After obtaining the drainage pollution mean, the dosing control unit calculates the difference between the drainage pollution mean and the preset pollution threshold, and records it as the flocculation difference. The dosing control unit calculates the ratio of the flocculation difference to the sewage pollution mean, and records it as the difference ratio.

[0020] The dosing control unit introduces the process temperature and process pH into a preset flocculant action model through the action analysis unit to obtain the process flocculation ratio. The dosing control unit compares the process flocculation ratio with the initial flocculation ratio. If the process flocculation ratio is less than the initial flocculation ratio, it is recorded as a process difference point. The dosing control unit calculates the proportion of the number of process difference points in the number of all process flocculation ratios to obtain a process difference ratio.

[0021] The dosing control unit generates a dosing correction factor θ according to the difference ratio and the process difference ratio, and the dosing control unit corrects the dosing proportion model according to the dosing correction factor to obtain the corrected dosing proportion model.

[0022] As a preferred embodiment of the present invention, after generating a qualified flocculation signal, the sewage separation unit sends the qualified flocculation signal and the mean value of drainage pollution to a data statistics unit, and the data statistics unit can also collect pollution data in real time during the sewage flocculation process to obtain a process pollution mean value;

[0023] The data statistics unit generates a flocculation completion signal when the process pollution mean is less than a preset pollution threshold for the first time. The data statistics unit calculates the time from the addition of the flocculant to the generation of the flocculation completion signal, and records it as the flocculation completion time. The data statistics unit calculates the difference between the flocculation completion time and the preset processing time to obtain the time difference. If the difference is greater than or equal to the preset value, a flocculation advance signal is generated.

[0024] As a preferred embodiment of the present invention, the data statistics unit retrieves the time difference of sewage treatment in the historical sewage flocculation separation sedimentation tank through the database, takes the current time difference and the i adjacent time differences in the historical data as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After obtaining the dosing correction factor β, the dosing control unit corrects the dosing proportion model again through the dosing correction factor β.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, during sewage treatment, the sewage to be treated and the external environmental interference factors of the sewage treatment are collected, the collected results are quantitatively analyzed to obtain quantitative data, and then the quantitative data are processed by dynamic model simulation to generate a simulated flocculant addition amount, thereby realizing automatic addition of an appropriate amount of flocculant according to the needs of sewage treatment, thereby improving the intelligence level of the sewage treatment dosing process.

[0027] 2. In the present invention, the result of sewage flocculation is detected, and whether the sewage treatment meets the standard is determined according to the sewage flocculation result, and then whether the amount of flocculant added is sufficient is determined. When the amount of flocculant added is insufficient, the simulation model of the amount of flocculant added is automatically corrected and adjusted, so that the simulation model of the amount of flocculant added can realize machine learning and automatic optimization functions in use, thereby improving the effect of intelligent delivery.

[0028] 3. In the present invention, the sewage flocculation process is monitored, and the sewage flocculation completion effect and completion time are analyzed according to the sewage changes during the sewage flocculation process. Whether the flocculant is added excessively is analyzed through the completion time and completion effect, so as to avoid the negative impact of excessive flocculant addition leading to increased economic costs and new pollution caused by excess flocculant in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0030] Figure 1 is a system block diagram of the present invention;

[0031] Figure 2 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] See also Figure 1 - Figure 2 As shown, a sewage treatment dosing system suitable for a sewage flocculation separation sedimentation tank comprises an action analysis unit, a sewage collection unit, a dosing control unit, a sewage separation unit and a data statistics unit. The sewage collection unit is used to collect sewage discharged into the sewage flocculation separation sedimentation tank, and the volume of sewage discharged into the sewage flocculation separation sedimentation tank is obtained through a flow meter. At the same time, the sewage pollution data entering the sewage flocculation separation sedimentation tank is collected through a sewage online automatic analyzer. The collected sewage pollution data includes nitrogen and phosphorus content A, total organic matter content B, heavy metal ion content C and suspended particle content D in the sewage. The sewage collection unit assigns different weight thresholds a1, a2, a3, a4 to different data in the sewage pollution data, and calculates the sewage pollution mean J through weighted average.

[0035] The sewage collection unit records the sewage volume as V, and the sewage pollution mean as J, and obtains the sewage treatment volume W by multiplying and comprehensively calculating the product through the formula, W=q*V*J. The sewage collection unit sends the sewage treatment volume to the dosing control unit;

[0036] The action analysis unit collects the action environment of the sewage treatment chemicals at regular intervals. When collecting the action environment of the sewage treatment chemicals, the sewage temperature in the sewage flocculation separation sedimentation tank is first collected and recorded as the initial temperature of the sewage. The action analysis unit collects the pH value of the sewage in the sewage flocculation separation sedimentation tank and records it as the initial pH value.

[0037] The action analysis unit imports the initial temperature and initial pH into the preset flocculant action model, obtains the initial flocculation ratio of the flocculant under the initial temperature and initial pH environment through the preset flocculant model, and then sends the initial flocculation ratio to the dosing control unit;

[0038] After obtaining the sewage treatment volume and the initial flocculation ratio, the dosing control unit brings the sewage treatment volume and the initial flocculation ratio into the preset dosing ratio model for calculation to obtain the dosing amount, and releases the flocculant according to the dosing amount, and purifies the sewage in the sewage flocculation separation sedimentation tank through an appropriate proportion of flocculant.

[0039] Embodiment 2:

[0040] See also Figure 1 - Figure 2 As shown, the sewage separation unit discharges the sewage after the flocculation and sedimentation is completed. In the process of discharging the sewage, the sewage pollution data is collected again, and the pollution data in the drainage process is weighted averaged again to obtain the drainage pollution mean. The sewage separation unit compares the drainage pollution mean with the preset pollution threshold. If the drainage pollution mean is less than the preset pollution threshold, a flocculation qualified signal is generated. If the drainage pollution mean is greater than or equal to the preset pollution threshold, a flocculation failure signal is generated.

[0041] After generating the flocculation failure signal, the sewage separation unit sends the flocculation failure signal and the mean value of the drainage pollution to the dosing control unit. After obtaining the mean value of the drainage pollution, the dosing control unit calculates the difference between the mean value of the drainage pollution and the preset pollution threshold, and records it as the flocculation difference. The dosing control unit calculates the ratio of the flocculation difference to the mean value of the sewage pollution, and records it as the difference ratio Cb.

[0042] The dosing control unit obtains the temperature change and pH change during the flocculation process through the action analysis unit, and obtains multiple sets of process temperatures and process pH values. The dosing control unit imports the process temperature and process pH values ​​into a preset flocculant action model, and obtains the flocculation ratio of the flocculant under the conditions of the process temperature and process pH values, which is recorded as the process flocculation ratio. The dosing control unit compares the process flocculation ratio with the initial flocculation ratio. If the process flocculation ratio is greater than or equal to the initial flocculation ratio, no response is made. If the process flocculation ratio is less than the initial flocculation ratio, it is recorded as a process difference point.

[0043] The dosing control unit counts all process difference points, and calculates the proportion of the number of process difference points in the number of all process flocculation ratios to obtain the process difference ratio Gb;

[0044] The dosing control unit generates the dosing correction factor θ through the formula, Wherein k is a preset coefficient, and the dosing control unit corrects the dosing proportion model by the dosing correction factor, obtains the corrected dosing proportion model, and uses the corrected dosing proportion model as the calculation model for subsequent sewage flocculation sedimentation separation.

[0045] Embodiment three:

[0046] See also Figure 1 - Figure 2 As shown, after the sewage separation unit generates a qualified flocculation signal, it sends the qualified flocculation signal and the mean value of drainage pollution to the data statistics unit. During the sewage flocculation process, the data statistics unit collects real-time pollution data of the sewage in the sewage flocculation separation sedimentation tank, and calculates the pollution mean value in the treatment process based on the collected sewage pollution data, which is recorded as the process pollution mean value;

[0047] The data statistics unit compares the mean values ​​of multiple groups of process pollution with the preset pollution threshold value in time sequence. When the mean value of process pollution is less than the preset pollution threshold value for the first time, a flocculation completion signal is generated. The data statistics unit calculates the time from the input of the flocculant to the generation of the flocculation completion signal, and records it as the flocculation completion time. The data statistics unit calculates the difference between the flocculation completion time and the preset processing time to obtain the time difference. If the difference is greater than or equal to the preset value, a flocculation advance signal is generated. If the difference is less than the preset value, a flocculation delay signal is generated.

[0048] The data statistics unit does not respond after generating the flocculation delay signal;

[0049] After generating the flocculation advance signal, the data statistics unit connects to the database, records the time difference, and retrieves the time difference of the sewage treatment in the historical sewage flocculation separation sedimentation tank through the database, and statistics the current time difference and the adjacent i time differences in the historical data, and uses the statistical multiple time differences as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After obtaining the dosing correction factor β, the dosing control unit corrects the dosing proportion model again through the dosing correction factor β, and uses the corrected dosing proportion model as a new calculation model for subsequent sewage flocculation separation sedimentation.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank, characterized in that: It includes an action analysis unit, which is used to collect the action environment during sewage treatment, simulate the collected action environment, and obtain the initial flocculation ratio; A sewage collection unit, the sewage collection unit is used to obtain the sewage pollution mean and sewage volume, and analyze the sewage pollution mean and sewage volume to obtain the sewage treatment volume; A dosing control unit, wherein the dosing control unit obtains the sewage treatment volume through the sewage collection unit, obtains the initial flocculation ratio through the action analysis unit, and simulates the sewage treatment volume and the initial flocculation ratio to obtain the dosing amount; A sewage separation unit, wherein the sewage separation unit is used to collect statistics on the sewage after flocculation to obtain a mean value of drainage pollution, and to analyze the flocculation effect according to the mean value of drainage pollution to obtain a dosing correction factor, and to correct the dosing amount of the dosing control unit by the dosing correction factor; The data statistics unit performs online monitoring of the sewage flocculation process, generates a dosing correction factor based on a comprehensive analysis of the online monitoring process and historical data, and corrects the dosing amount of the dosing control unit through the dosing correction factor.

2. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: When the action analysis unit collects data on the action environment, it first collects the temperature of the sewage in the sewage flocculation separation sedimentation tank and records it as the initial temperature of the sewage, collects the pH value of the sewage in the sewage flocculation separation sedimentation tank and records it as the initial pH value, and then collects the temperature and pH value of the sewage at certain time intervals and records them as the process temperature and process pH value; The action analysis unit introduces the initial temperature and the initial pH into a preset flocculant action model, generates an initial flocculation ratio through the preset flocculant model, and sends the initial flocculation ratio to the dosing control unit.

3. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: The sewage collection unit obtains the sewage volume through a flow meter, and collects sewage pollution data through a sewage online automatic analyzer. The collected sewage pollution data includes nitrogen and phosphorus content, total organic matter content, heavy metal ion content and suspended particle content in the sewage. The sewage collection unit assigns different weight thresholds to different data in the sewage pollution data, and calculates the sewage pollution mean through weighted average. The sewage collection unit performs comprehensive calculation based on the sewage volume and the sewage pollution mean value through a formula to obtain the sewage treatment volume, and the sewage collection unit sends the sewage treatment volume to the dosing control unit.

4. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: The dosing control unit substitutes the sewage treatment volume and the initial flocculation ratio into a preset dosing ratio model for calculation to obtain the dosing amount, and releases the flocculant according to the dosing amount.

5. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: The sewage separation unit collects sewage pollution data in the following manner: collecting the data during the sewage discharge process; The sewage separation unit performs weighted average calculation on the pollution data in the drainage process again to obtain the drainage pollution mean value. The sewage separation unit compares the drainage pollution mean value with the preset pollution threshold value. If the drainage pollution mean value is less than the preset pollution threshold value, a flocculation qualified signal is generated. If the drainage pollution mean value is greater than or equal to the preset pollution threshold value, a flocculation failure signal is generated.

6. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 5 is characterized in that: After generating the flocculation failure signal, the sewage separation unit sends the flocculation failure signal and the drainage pollution mean to the dosing control unit. After obtaining the drainage pollution mean, the dosing control unit calculates the difference between the drainage pollution mean and the preset pollution threshold, and records it as the flocculation difference. The dosing control unit calculates the ratio of the flocculation difference to the sewage pollution mean, and records it as the difference ratio. The dosing control unit introduces the process temperature and process pH into a preset flocculant action model through the action analysis unit to obtain the process flocculation ratio. The dosing control unit compares the process flocculation ratio with the initial flocculation ratio. If the process flocculation ratio is less than the initial flocculation ratio, it is recorded as a process difference point. The dosing control unit calculates the proportion of the number of process difference points in the number of all process flocculation ratios to obtain a process difference ratio. The dosing control unit generates a dosing correction factor θ according to the difference ratio and the process difference ratio, and the dosing control unit corrects the dosing proportion model according to the dosing correction factor to obtain the corrected dosing proportion model.

7. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: After generating a qualified flocculation signal, the sewage separation unit sends the qualified flocculation signal and the mean value of drainage pollution to the data statistics unit. The data statistics unit can also collect pollution data in real time during the sewage flocculation process to obtain the process pollution mean value. The data statistics unit generates a flocculation completion signal when the process pollution mean is less than a preset pollution threshold for the first time. The data statistics unit calculates the time from the addition of the flocculant to the generation of the flocculation completion signal, and records it as the flocculation completion time. The data statistics unit calculates the difference between the flocculation completion time and the preset processing time to obtain the time difference. If the difference is greater than or equal to the preset value, a flocculation advance signal is generated.

8. The sewage treatment dosing system suitable for sewage flocculation separation sedimentation tank according to claim 1 is characterized in that: The data statistics unit retrieves the time difference of sewage treatment in the historical sewage flocculation separation sedimentation tank through the database, takes the current time difference and the i-time adjacent time difference in the historical data as samples, generates a dosing correction factor β through a preset adjustment algorithm, and sends the dosing correction factor β to the dosing control unit. After the dosing control unit obtains the dosing correction factor β, it corrects the dosing proportion model again through the dosing correction factor β.

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